[flexcoders] Flashbuilder 4.0.1 debugger issue?

[Richard Rodseth]

A colleague is experiencing a problem where our app hangs the browser when
run in the debugger, but not when launched in non-debug mode (from
Flashbuilder). He's the only one on the team who started Flex work since the
release of 4.0.1 so I'm wondering if there are any known problems that could
explain this.